OnTimeStats

Historical on-time performance

Denver to Greensboro

1,370 miData through Dec 2025Source: US DOT · BTS

Flights on DEN–GSO arrive on time 70% of the time over the last 12 months.

On-time rate70%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • SkyWest Airlines
    On-time70%
    Medianon time
    p9065 min
    Cancel0.6%
    Flights337

Why flights run late

Delay causes

  • Airline23%
  • Weather3%
  • Air traffic (NAS)32%
  • Late aircraft43%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly DEN → GSO

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.

  • Sundays77% on time · p90 35 min · 118 flights · limited
  • Tuesdays75% on time · p90 65 min · 118 flights · limited
  • Saturdays74% on time · p90 40 min · 118 flights · limited
  • Thursdays72% on time · p90 55 min · 117 flights · limited
  • Wednesdays71% on time · p90 45 min · 118 flights · limited
  • Fridays71% on time · p90 50 min · 118 flights · limited
  • Mondays69% on time · p90 45 min · 118 flights · limited
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.